Error when subclassing models.ForeignKey field

That's what I just did:http://code.djangoproject.com/ticket/15184-- You received this message because you are subscribed to the Google Groups "Django users" group.To post to this group, send email to django-users@googlegroups.com.To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com.For more options, visit this group athttp://groups.google.com/group/django-users?hl=en.